JPH05213390A - Cold insulating tank - Google Patents

Abstract

PURPOSE:To install a frame member vertically at each of the four corners formed at the joining of side surfaces, set cross beams in contact with the side faces of the frame members and easily weld their mating parts together in a hexahedral cold insulating tank composed of a plurality of frame members and of outer panels. CONSTITUTION:In a hexahedral cold insulating tank 1, a square steel pipe 2 is vertically installed as a frame member at each of the four corners formed at the joining of side surfaces and one side face of each of the square steel pipes 2 is nearly bisectionally oriented relative to an angle formed by each adjacent side surface at each corner of the cold insulating tank 1. Cross beams 3 are installed horizontally with their end faces held in contact with flat side faces of the square steel pipes 2 and these mating parts are welded together to form the framework of the cold insulating tank 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hexahedron cold storage tank composed of a plurality of frameworks and an outer plate, and more particularly to a cold insulation tank which facilitates joining between frameworks arranged vertically and horizontally.

[0002]

2. Description of the Related Art A conventional example of a hexahedral cold storage tank 1 composed of a plurality of frames and an outer plate is shown in FIGS. As shown in FIG. 4, the hexahedron cold storage tank 1 has a plurality of skeletons 8 arranged vertically around the four corners of the side surfaces 1a and 1b, and a plurality of transverse beams 9 are similarly arranged between the skeletons 8 and welded together. After that, the outer plate 10 is attached to the outside of the frame 8 and the lateral beam 9.
Such a cold storage tank 1 has four corners on the side surfaces 1a and 1b,
As shown in FIG. 5, the H-section steel frame 11 is arranged vertically, and the H-section steel 11 is provided on the side surfaces 11a and 11b of the H-section steel 11.
After welding the smaller H-shaped steels 12 by welding, the outer plate 10 was disposed outside the H-shaped steels 11 and 12. Here, the H-section steels 11 arranged at the four corners are smooth surfaces 11a on one side surface 1a as shown in FIG. 5, but are recessed parts 11b on the other side surface 1b. Therefore, when the other H-shaped steel 12 is joined to the recess 11b side of the H-shaped steel 11 by welding, the smooth surface 12a of the H-shaped steel 12 to be welded due to the arrangement of the outer plate 10 on the outside. To the outer plate surface and the end 12
The cutting was performed by aligning b with the recess 11b on the mating side.

On the other hand, FIG. 6 shows another conventional example, which is a cold storage tank 1.
This is a case where the general structural square steel pipes 13 (hereinafter, referred to as square steel pipes) are arranged at the four corners of the side surface of. In this conventional example, after arranging the flat plate portion 13a of the rectangular steel tube 13 so as to match the surface of the cold storage tank 1 on the outer plate 10 side, the side surface 13a of the rectangular steel tube 13 is arranged.
Then, the horizontal beam 12 of H-section steel and the flat plate portion 12a of the square steel pipe 13
After being aligned with the flat plate portion 13b on the outer plate 10 side and weld-bonded to each other, the outer plate 10 was disposed outside the skeleton. In addition,
As a device related to such an apparatus, there is, for example, JP-A-60-221684.

[0004]

Of the above-mentioned conventional techniques,
On the side of the vertical H-section steel shown in FIG.
In the structure in which the section steels are weld-bonded, it is necessary to cut the end of the H-section steel on the side to be weld-bonded according to the shape of the other side.
The number of cutting operations on the end of the shaped steel becomes extremely large. Further, in the structure shown in FIG. 6 in which the H-shaped steel is welded to the side surface of the vertical rectangular steel pipe, if the vertical rectangular steel pipe and the surface of the horizontal beam of the H-shaped steel on the outer plate side are made the same, Since there is an R portion 13c at the corner, the gap 13d at the joint portion becomes large, and when H-section steel is welded to a square steel pipe, the gap is filled, so much time is required compared with general butt welding. Is required.

An object of the present invention is to facilitate the welded joint of a frame arranged in the vertical direction of four corners of a side face and a cross beam connected to the side face of the frame in a hexahedral cold storage tank composed of a plurality of frames and an outer plate. Is to

[0006]

In order to achieve the above object, in a hexahedron cold storage tank, the frameworks vertically arranged at the four corners of the side surface are rectangular steel pipes, and the side surface of the rectangular steel pipe defines the corners of the cold storage tank. It is arranged so as to be in a direction approximately in the middle of the two side faces to be constructed, and a horizontal cross beam is welded and joined to the side faces of the rectangular steel pipe to form a frame structure of the cold insulation tank.

[0007]

According to the present invention, in the frame connection of the hexahedron cold storage tank, the cross beams arranged on the flat surface portions of the side surfaces of the rectangular steel pipes arranged vertically at the four corners have their ends aligned with the flat surface portions of the side surfaces of the rectangular steel pipe. It can be cut by a straight line and joined by welding. For this reason, cutting, processing for aligning the end face of the horizontal beam with the flat surface portion of the side surface of the rectangular steel pipe, and positioning and welding work of the rectangular steel pipe and the horizontal beam arranged in the vertical direction become very easy.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a cross-sectional view of a hexahedral cold storage tank to which the present invention is applied, and FIG. 2 is an enlarged view of part A of FIG. 1, which is a cross-sectional view of a corner portion of the cold storage tank. In the figure, 1 is a cold storage tank, 2 is a square prismatic steel pipe, 3 is a horizontal beam of H-shaped steel, 4 is an outer plate, and 5 is a welded portion. In this embodiment, first, the flat surface portions 2a of the square steel tube 2 are provided at the four corners of the cold insulation tank 1 and the side surfaces 1a of the cold insulation tank 1 are
It is arranged so as to be positioned at substantially the same angle with respect to the direction of 1b. Next, after cutting the horizontal beam 3 so that the end surface 3a thereof coincides with the flat surface portion 2a of the rectangular steel pipe 2, the horizontal beam 3 is arranged on the flat surface portion 2a of the rectangular steel pipe 2 and joined by welding to form the welded portion 5. Form. Here, the plane portion 2a of the square steel pipe 2 and the cross beam 3 are aligned so that the outer line of the outer plate 4 substantially coincides with the apex 2b of the R portion of the square steel pipe 2 when the outer plate 4 is arranged. I'll do it. Rectangular steel pipes 2 and horizontal beams 3 arranged vertically
After joining, the end portion of the outer plate 4 is brought into contact with the square steel pipe 2,
The outer plate 4 and these frames are welded. Thereby, in the production of the cold insulation tank 1, the horizontal beam 3 arranged on the side surface of the rectangular steel pipe 2 in the vertical direction can cut the end face with a straight line, and the work of lowering the horizontal beam 3 can be facilitated. Further, the joining surface of the rectangular steel pipe 2 and the horizontal beam 3 in the vertical direction is a straight line, which facilitates the alignment of both frames. Therefore, the welding of both frames becomes easy.
Further, by using the square steel pipes 2 as the frames vertically arranged at the four corners of the cold storage tank 1, when the platform is arranged inside or outside the cold storage tank 1, the square steel pipes 2
From the flat part 2c facing the inside or outside of the cold storage tank 1
Since the skeletons can be arranged in the middle direction of both side surfaces forming the corners, the whole skeleton can be effectively arranged. As a result, the weight of the platform can be reduced.

FIG. 3 shows another embodiment. In the figure, 6 is a rectangular rectangular steel tube, and 7 is a horizontal beam of H-shaped steel having a larger web height than the horizontal beam 3 of FIG. The same reference numerals as in the embodiment of FIG. 2 indicate the same members. In this embodiment, the rectangular steel pipes 6 vertically arranged at the four corners of the cold storage tank 1 are rectangular, and the long side flat portions 6a are located at substantially the same angle with respect to the directions of the side surfaces 1a and 1b of the cold storage tank 1. Arrange to do.
Next, after the horizontal beam 7 of H-shaped steel is cut and processed so that the end surface 7a thereof coincides with the flat surface portion 6a of the square steel pipe 6, the horizontal beam 7 is arranged on the flat surface portion 6a of the square steel pipe 6 and joined by welding. The weld 5 is formed. Positioning of the rectangular steel pipe 6 and the lateral beam 7, disposition of the outer plate 4 and welding are performed in the same manner as in the embodiment shown in FIG. As a result, even when the cold storage tank 1 increases the height of the lateral beam 7 to increase the out-of-plane bending rigidity of the side surface,
It is possible to obtain the same effect as the embodiment shown in FIG.

[0010]

According to the present invention, in a hexahedral cold storage tank composed of a plurality of frames and an outer plate, the welded joints of the frames arranged vertically at the four corners of the side surface and the horizontal beams joined to the side surfaces of the frame. There is an effect that can be facilitated.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view of a cold storage tank to which the present invention is applied.

FIG. 2 is an enlarged cross-sectional view of part A in FIG.

FIG. 3 is a sectional view of another embodiment to which the present invention is applied.

FIG. 4 is a schematic perspective view of the entire cold storage tank.

FIG. 5 is a partial horizontal sectional view of a conventional cold storage tank.

FIG. 6 is a partial horizontal cross-sectional view of a cold storage tank in another example of the related art.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cooling tank, 2 ... Square rectangular steel pipe for general structures, 3 ... Horizontal beam, 4 ... Outer plate, 5 ... Welding part, 6 ... Rectangular rectangular steel pipe for general structures, 7 ... Horizontal beam.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masayoshi Nunomura 794 Azuma Higashitoyo, Shimomatsu City, Yamaguchi Prefecture Inside the Kasado Plant, Hitachi, Ltd. Techno Engineering Co., Ltd. Kasado Office

Claims (5)

[Claims] 1. A plurality of main frames are arranged in a vertical direction, horizontal frames are arranged in horizontal and diagonal directions between the main frames to form a frame structure, and a side surface and an upper surface of the frame structure are formed. In a hexahedral cold storage tank manufactured by arranging outer plates on the outside, the planes of the cross-section of the skeleton vertically arranged at the four corners of the side surface consisting of four faces are the directions of the two side surfaces forming the corner. Cooling tank characterized by being out of sync. 2. The cold storage tank according to claim 1, wherein among the plane portions of the cross section of the frame vertically arranged at the four corners of the side surface composed of four surfaces, the two side surfaces constituting the corners of the cold storage tank are provided. The cold insulation tank characterized in that the plane portion of the cross-section of the frame facing the direction is positioned at an intermediate angle between the two side surfaces of the cold insulation tank. 3. The cold-storage tank according to claim 1, wherein the side surfaces of the cold-storage tank composed of four surfaces are substantially perpendicular to each other. 4. The cold storage tank according to claim 3, wherein among the plane portions of the cross section of the framework vertically arranged at the four corners of the four side surfaces of the cold storage tank, the cross section of the framework facing the side surface of the cold storage tank is formed. The cold storage tank, wherein the flat portion is offset by about 45 degrees with respect to the direction of the side surface of the cold storage tank. 5. The cold insulation tank according to any one of claims 1 to 4, wherein the frameworks vertically arranged at the four corners of the four side surfaces are rectangular steel pipes for general structure.